Apple has announced a new model of iPhone, dubbed the iPhone 4S, which debuts a number of new hardware features over existing models.

The iPhone 4S looks identical to the existing iPhone 4, but sports the same A5 chip as the iPad 2, a dual-core processor and an improved 8 megapixel camera that can capture 1080p video.

The new iPhone 4S processor is twice as fast as the iPhone 4, says Apple, while the graphics hardware is several magnitudes faster than existing models.

New iPhone 4S features also include a 'virtual assistant' called Siri which can respond to voice commands such as 'Find me a restaurant near XXXX', as well as transcribing voice notes. To start with Siri will only support English, German and French - but more languages are on the way.

The iPhone 4S release date is set at 14 October in America, Canada, Australia, France, Germany, Japan and the UK, with black and white models available to pre-order from Friday.

As usual, prices break down based on storage size. A 16GB iPhone 4S will set you back $199 USD, while a 32GB and 64GB iPhone 4S will cost $299 USD and $399 USD respectively with two-year contracts. UK prices are yet to be announced.

Existing iPhone models will be discounted - an 8GB iPhone 4 will now cost $99 USD, while the iPhone 3GS will be free with a contract.

Apple also teased upcoming features for iOS 5, which launches on 12 October - expect a new messaging app, a personal organiser, enhanced Twitter support and a new magazine shop called Newsstand.

Speaking of which, don't forget that you can read Custom PC on your iPhone right now.

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